Motorad 246-174 Engine Coolant Thermostat

Reliable Engine Coolant Thermostat for BMW and Rolls-Royce Models

The Motorad Standard 246-174 engine coolant thermostat is designed to maintain optimal engine temperature for select BMW and Rolls-Royce vehicles. Engineered to open at 170 degrees Fahrenheit, this thermostat helps regulate coolant flow and ensures efficient engine performance.

• Sealing flange outside diameter: 2.64 inches
• Bypass diameter: 1.46 inches
• Bypass length: 1.36 inches
• Flange thickness: 0.05 inches
• Temperature rating: 170°F (77°C)
• Gasket or seal not included
• No jiggle pin weep hole

Detailed Product Description

The Motorad Standard 246-174 thermostat is specifically designed for precise temperature control in engine cooling systems. Its 2.64-inch sealing flange outside diameter ensures a secure fit within the thermostat housing, while the 1.46-inch bypass diameter and 1.36-inch bypass length allow for proper coolant circulation during engine warm-up. The 0.05-inch flange thickness contributes to a reliable seal and consistent performance. This thermostat opens at 170 degrees Fahrenheit, helping to maintain the engine within the optimal operating temperature range.

The Standard product line from Motorad focuses on delivering dependable, OEM-quality replacement parts that meet original equipment specifications. This thermostat is engineered to provide consistent thermal response and durability, making it suitable for maintaining the cooling system integrity in your vehicle.

Compatible Vehicles and Applications

This engine coolant thermostat is compatible with various BMW and Rolls-Royce models, including:

• BMW 320i, 528e, 528i, 530i, 533i
• Rolls-Royce Silver Shadow II, Silver Spirit, Silver Spur, Touring Limousine

It is designed to replace the original thermostat in these vehicles, ensuring proper engine temperature regulation and preventing overheating or inefficient cooling.

Common Issues Addressed by This Thermostat

• Engine overheating due to thermostat failure
• Poor heater performance from stuck-open thermostat
• Inconsistent engine temperature regulation
• Coolant flow restriction during engine warm-up
• Reduced fuel efficiency caused by improper engine temperature

Installation Notes and Tips

When installing the Motorad Standard 246-174 thermostat, ensure the sealing flange is properly seated to prevent coolant leaks. Since this part does not include a gasket or seal, use the appropriate OEM gasket or sealant recommended for your vehicle. Verify the thermostat orientation matches the original part, and confirm the jiggle pin weep hole is not required for your application. Always follow manufacturer torque specifications for the thermostat housing bolts.

Quality Assurance and Warranty

Motorad's Standard line parts are manufactured to meet or exceed OEM standards, providing reliable performance and durability. While specific warranty details are not provided, Motorad products typically come with limited warranties covering defects in materials and workmanship. For exact warranty information, refer to the product documentation or contact the distributor.